NVIDIA GeForce MX150 vs NVIDIA GeForce 945M

NVIDIA GeForce MX150

The Nvidia GeForce MX150 is a dedicated entry-level mobile graphics card for laptops based on the GP108 chip with the Pascal architecture. It was announced mid 2017 and is the mobile version of the desktop GeForce GT 1030. It offers the same 384 shader cores and 64 Bit memory bus manufactured in 14 nm. The clock rates and performance however are a bit higher than the desktop GT 1030. Officially it is the successor to the older Maxwell based GeForce 940MX.

Currently there are two variants of the MX150, a "normal" N17S-G1-A1 with 1468 - 1531 MHz and 25 Watt TDP and a power efficient variant named N17S-LG-A1 with 936 - 1037 MHz (-32%) and 10 Watt TDP (-60%) for thin and light laptops.

The GP108 chip is manufactured in a 14 nm FinFET process at Samsung (LPP) and offers a number of new features, including support for DisplayPort 1.4 (ready), HDMI 2.0b, HDR and improved H.265 video de- and encoding (PlayReady 3.0). 4K HDR with Netflix however wont run due to the minimum 3 GB graphics memory that is required. Compared to the bigger Pascal chips, the small GP108 does not support Simultaneous Multi-Projection (SMP) for VR and G-Sync. A full list of improvements and the new Pascal desktop GPUs is available in our dedicated Pascal architecture article.

The performance however is higher than the old GeForce GTX 950M with GDDR5 memory. Still modern and demanding games only run in low settings and resolutions fluently. E.g. Assassin's Creed Origins was only playable in lowest settings and 1280x720 pixels. Less demanding games like Call of Duty WW2 also ran in medium settings and Full HD fluently. See below for more and detailed gaming benchmarks.

The power efficient N17S-LG-A1 ULV variant is clearly slower than the normal one (due to the 32% lower boost clock).

The power consumption (25 Watt TDP of the chip alone) however lies on a level of the old 940MX (23 Watt). The older 950M and the new GTX 1050 are rated much higher with 40 Watt TDP. The GeForce MX150 also uses a small 23 x 23 mm package due to the small chip size.

NVIDIA GeForce 945M

The NVIDIA GeForce 945M is a mid-range, DirectX 12-compatible graphics card for laptops unveiled in March 2015. It is based on Nvidia's Maxwell architecture (GM107 chip) and manufactured in 28 nm. The 945M offers 512 shaders (compared to the 640 of the GTX 950M) clocked at 928 MHz. The dedicated DDR3 graphics memory is connected with a 128 Bit bus clocked at 1000 MHz (effective 2000, 32 GB/s). 

Architecture

Compared to Kepler, Maxwell has been optimized in several details to increase power efficiency. Smaller Streaming Multiprocessors (SMM) with only 128 ALUs (Kepler: 192) and an optimized scheduler should lead to better utilization of the shaders. Nvidia promises that a Maxwell SMM with 128 ALUs can offer 90 percent of the performance of a Kepler SMX with 192 ALUs. GM107 features 5 SMMs and thus 640 shader cores, 40 TMUs and 16 ROPs (128-bit interface).

Another optimization is the massively enlarged L2 cache (GM107: 2 MB). The increased size can handle some of the memory traffic to allow for a relatively narrow memory interface without significantly reducing the performance.

GM107 supports DirectX 12 with feature level 11_0 only.

Performance

The performance of the 945M is slightly worse than the GTX 950M but clearly faster than the 940M. The DDR3 variant of the GTX 950M is about 10 percent faster for example. Therefore, it is most suited for medium details of demanding games in 2015 (see below for benchmarks).

Features

GM107 integrates the sixth generation of the PureVideo HD video engine (VP6), offering a better decoding performance for H.264 and MPEG-2 videos. Of course, VP6 supports all features of previous generations (4K support, PIP, video encoding via NVENC API). Unfortunately, HDMI 2.0 is still not supported.

Power Consumption

The power consumption of the GeForce 945M should be somewhere around 40 Watt. Therefore it is most suited for bigger laptops from 14-inch and up.